"A vast natural history museum on the National Mall that oversees the largest collection of natural history specimens in the world—about 148 million—featuring attractions like the Butterfly Pavilion, the 45.52-carat Hope Diamond, and an 11-ton African bush elephant in the rotunda; admission is free and the museum is open 364 days a year." - Evie Carrick Evie Carrick Evie Carrick is a writer and editor who’s lived in five countries and visited well over 50. She now splits her time between Colorado and Paris, ensuring she doesn't have to live without skiing or L'As du Fallafel. Travel + Leisure Editorial Guidelines